Bike: Bilingual Keyphrase Experiments

(1)

Publisher’s version / Version de l'éditeur:

Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n’arrivez pas à les repérer, communiquez avec nous à [email protected]. Questions? Contact the NRC Publications Archive team at

[email protected]. If you wish to email the authors directly, please see the first page of the publication for their contact information.

https://publications-cnrc.canada.ca/fra/droits

L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB.

Recent Advances in Natural Language Processing (RANLP), Modern

Approaches in Translation Technologies Workshop 2005 [Proceedings], 2005

READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE. https://nrc-publications.canada.ca/eng/copyright

NRC Publications Archive Record / Notice des Archives des publications du CNRC : https://nrc-publications.canada.ca/eng/view/object/?id=447a8262-6700-4c02-935e-e618411c3b9f https://publications-cnrc.canada.ca/fra/voir/objet/?id=447a8262-6700-4c02-935e-e618411c3b9f

NRC Publications Archive

Archives des publications du CNRC

This publication could be one of several versions: author’s original, accepted manuscript or the publisher’s version. / La version de cette publication peut être l’une des suivantes : la version prépublication de l’auteur, la version acceptée du manuscrit ou la version de l’éditeur.

Access and use of this website and the material on it are subject to the Terms and Conditions set forth at

Bike: Bilingual Keyphrase Experiments

(2)

National Research Council Canada Institute for Information Technology Conseil national de recherches Canada Institut de technologie de l'information

Bike: Bilingual Keyphrase Experiments *

Nadeau, D., Barriere, C., and Foster, G.

September 2005

* published at Recent Advances in Natural Language Processing (RANLP), Modern Approaches in Translation Technologies Workshop. Borovets, Bulgaria. September 2005. NRC 48286.

National Research Council of Canada

Permission is granted to quote short excerpts and to reproduce figures and tables from this report, provided that the source of such material is fully acknowledged.

(3)

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

(4)

5# & =3@@B? # , ! # ! # 4 , 6 C ( " # # , & ## # ! # ( " # # ! # # ! # # # - # , # ( " ! 4 +, 6 # # # ,+ # # , ! # , ! =0 ( >113?( & & # - ! , ! # ! , ( " & ! ! # " - > 4 "6 ! # & , 9 : , , # ; " = ( >11;? # ( D # # # # , # , & # ! ! = D >11>? & ! # & ,( "

# & + +& & & , ! ,

+& ( , ! # 4 # # , # # - 6 ! ! - ! # + ! ( E , =>11>? , , ! , # # # # , # ( " ! # , # - , # , # , # ! # ! & # = $ 3@@;?( & & # , ! # ( 9 # , , # # ! # 8 # , # , ! # ( % & !! ! & ! # # # ! , ( " # ! # - ( " & ! # # ! # ! # ! ! 0# ! # " # # ! 4 0" 6( F ! G ! & , # , # # # # # # , # ( # # , # 4/6 ! 4 6 , , # 4!6 4 6( 5 / /! !, 0" ( / ! # # # /! ! / , 0" ( " # # ! : 12A # '/! / ! ")( # 4"6 # , ( " /!

8 >2A & / 8 >1B & ( " , !

# 4 !6 33 , ! 4 6 @( " # & ## # ! # # , ! ( # , & # > ..&&&( # (# : ..&&&( #( ( . 9 . ; ..&&&(, , (# .

(5)

, # # ! # # & # # ! # 4 6 ( " & ! , # , & # # ## # , G ! ! # # , +G ## # ( 9 ;1H ! # ! 4! # 5"6 :1H ! & ! # # ! # , ! # ( " ! :1H ! I + J & ! ( !" # $ # & ## # ! ! , ! & , # 5" ! # # # ( % & "" " , # ( 0 # # & # - # + ## # " , 3( '() >1(>3 !" # % " , ! & # , , ( % * $ " # G , # 4 6 +, # 5" = >11:?( " # ! # + # & ( ! & ! # # 5> = & ( 3@@:? ! + + # # + + # & # # , , 0 # #

4 ! A & 6 # & &

( / # , , , + ! - # ( " ! & # # # # + + , , , , ! # ( " ! ! , # ! 4 ! 6 # # 9 ! # 5" # E ( 9 # I J ( 9 0" # # + , # ( 9 ! I# J ( # & & # , ! G # ! # G 4 #

& & & # # 6(

(6)

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

(7)

% % $ " , / , & # # # # - ( " & ! # G ! & # # 8 ! , # # ! ( " ! & ! & < ( +& & ! & ! ( " ! , # # &

( % & ( +& &

8 & # ! &

( / & & # & 8

, - & ! ( " , # ! " & " , <( 0 # # # & # 5" # , ! ( '() " :2(<< " K :A(:1 2 1 # " , % " ! # @@H ( ! " # ( % % # " , # # ! ! # # ( , ! & , # "( / # ! # , 4 " # 6 # ! , # , ! # 8 , ## ( " ! 8 # # ## # ! # ( # "M 4 , >116 ( ! " ! # ! ( " , & & , , # " # 8 , & # ! , , ( " ! , ! ! # ( 9 5 0 45 06 # ! # , & # 36 >6 # ! ( # , ! &( ! , & , ! # 4& 6 ( < 0 ! (

(8)

D , # 4 ! # 6( E ( ! " # $% & ' ( & ₁ $ ' ' " ) * #+ $% , # -. / 0 , 1/0,2 3 # /0, & $ 3 ( & ₁C$ 3 $ ( ) - 4 -3 " $ ( 4 - 4 ) /0,5 ₆ _/0, % # 50 , , ! , # 4 # 6 " & # # 5 0( ! & #

& & # & , &

# ! , , , A( ! # # # - 4 6 # - # 4# , , # 6( N " ! ## # ! :A(:1H :@(>>H( " ! # @2H ( '() " K , :@(>> 3 1 , # % / !! # , & , 5" 4" , ;6 , " 4" , B6 ! # 4, & @2H6( " , O>H , " 5" ! G # # !( 0 !" # 4 "" 9 & ! # , # 5" # # # # ( B_{! 5 0} _# ₍ _# _## _{# 5 0} ! <(3(3 <(3(> , # ! ! ;( A & 4 6 & , (

(9)

0% $ + 9 ! ! # # ( " & # ! ! # ( " , - # ! ! & # & " , A 5" # , ! & , " 5" ( '() # # , " ;:(A: 5 , # 0% , +

" # , # & & &

( " # # # ! , # 4 , , # ! 5" 7 3 , ! # ! "6 ! & ( # & 3 ! # ! & ( ! & 4 , , # & 6 + =3(1B3? # , 5" # 7 + =1(>>B? # , 5" 7 + =1(;BB? # , "7 + =3(;<;? # , # 7 + =1(A2:? # ! 4 ;(:(367 + =3(>2B? " # 4 6 5 0 4 ;(:(>67 " ! & & # # # ( 9 # 8 >1+ # & + ( " , ! & " , @ # # # ! # @@H ( '() & ;B(3< 6 & , # , % 2 + & ! ! ( N # + 5" - # # # # ( " , ! ! # , ! # , # # " - ( 9 & & # , & # ! , ( 9 ! # ! , ! # ( % ! ! 0" # ( & - , ! ! ! # 5" # # # ! ! !! , 4 # ;(>(36 # , ! ! & # " # , & ! ! +& (

(10)

3 , # 9 ! ## " , ( 9 # & # , ! ! 0# ! # " # # ! 4 0" 6 # ! # ! %!! # D F ! ( 5 = & ( 3@@:? F ( & 0 /( F P # Q( F $ , D( 5 # 43@@:6( " 5 # ! 5 # " F ( D # 3@4>6 3@@:( = D >11>? R , E D 4>11>6( F " N 9 , 5 / ( 1>(

= ( 3@@A? E E & / 43@@A6(

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